package com.yunwaikeji.gy_tool_library.utils;

import android.content.Context;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.os.Build;
import android.os.Environment;
import android.os.Looper;
import android.text.TextUtils;
import android.util.Log;
import android.widget.Toast;

import com.yunwaikeji.gy_tool_library.info.GYLogInfo;

import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

import java.io.File;
import java.io.FileOutputStream;
import java.io.PrintWriter;
import java.io.StringWriter;
import java.io.Writer;
import java.lang.reflect.Field;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.HashMap;
import java.util.Locale;
import java.util.Map;

/**
 * 报错日志工具
 */
public class GYLogUtils implements Thread.UncaughtExceptionHandler {
    public static final String TAG = GYLogUtils.class.getSimpleName();

    // 系统默认的UncaughtException处理类
    private Thread.UncaughtExceptionHandler mDefaultHandler;
    // CrashHandler实例
    private static GYLogUtils INSTANCE = new GYLogUtils();
    // 程序的Context对象
    private Context mContext;
    // 用来存储设备信息和异常信息
    private Map<String, String> infos = new HashMap<>();
    // 用于格式化日期,作为日志文件名的一部分
    private DateFormat formatter = new SimpleDateFormat("yyyy-MM-dd-HH-mm-ss", Locale.getDefault());

    /**
     * 保证只有一个CrashHandler实例
     */
    private GYLogUtils() {
    }

    /**
     * 获取CrashHandler实例 ,单例模式
     */
    public static GYLogUtils getInstance() {
        return INSTANCE;
    }

    private String path;

    /**
     * 初始化
     *
     * @param context
     */
    public void init(Context context, String path) {
        mContext = context;
        // 获取系统默认的UncaughtException处理器
        mDefaultHandler = Thread.getDefaultUncaughtExceptionHandler();
        // 设置该CrashHandler为程序的默认处理器
        Thread.setDefaultUncaughtExceptionHandler(this);
//        catchNomalLogToFile();
        this.path = path;
    }

    /**
     * 当UncaughtException发生时会转入该函数来处理
     */
    @Override
    public void uncaughtException(Thread thread, Throwable ex) {
        if (!handleException(ex) && mDefaultHandler != null) {
            // 如果用户没有处理则让系统默认的异常处理器来处理
            mDefaultHandler.uncaughtException(thread, ex);
        } else {
            try {
                Thread.sleep(5000);
            } catch (InterruptedException e) {
                Log.e(TAG, "error : ", e);
            }
            // 退出程序
            System.exit(0);
        }
    }

    /**
     * 自定义错误处理,收集错误信息 发送错误报告等操作均在此完成.
     *
     * @param ex
     * @return true:如果处理了该异常信息;否则返回false.
     */
    private boolean handleException(Throwable ex) {
        if (ex == null) {
            return false;
        }

        // 使用Toast来显示异常信息
        new Thread() {
            @Override
            public void run() {
                Looper.prepare();
                Toast.makeText(mContext, "程序出现异常", Toast.LENGTH_SHORT).show();
                Looper.loop();
            }
        }.start();
        // 收集设备参数信息
        collectDeviceInfo(mContext);
        // 保存日志文件
        saveCrashInfoToFile(ex);
        // catchLog();
        return true;
    }

    /**
     * 收集设备参数信息
     *
     * @param ctx
     */
    public void collectDeviceInfo(Context ctx) {
        try {
            PackageManager pm = ctx.getPackageManager();
            PackageInfo pi = pm.getPackageInfo(ctx.getPackageName(), PackageManager.GET_ACTIVITIES);
            if (pi != null) {
                String versionName = pi.versionName == null ? "null" : pi.versionName;
                String versionCode = pi.versionCode + "";
                infos.put("versionName", versionName);
                infos.put("versionCode", versionCode);
            }
        } catch (PackageManager.NameNotFoundException e) {
            Log.e(TAG, "collectDeviceInfo an error occured when collect package info", e);
        }

        Field[] fields = Build.class.getDeclaredFields();
        for (Field field : fields) {
            try {
                field.setAccessible(true);
                infos.put(field.getName(), field.get(null).toString());
                Log.d(TAG, field.getName() + " : " + field.get(null));
            } catch (Exception e) {
                Log.e(TAG, "collectDeviceInfo an error occured when collect crash info", e);
            }
        }
    }

    private String saveCrashInfoToFile(Throwable ex) {
        StringBuffer sb = new StringBuffer();
        for (Map.Entry<String, String> entry : infos.entrySet()) {
            String key = entry.getKey();
            String value = entry.getValue();
            sb.append(key + "=" + value + "\n");
        }

        Writer writer = new StringWriter();
        PrintWriter printWriter = new PrintWriter(writer);
        ex.printStackTrace(printWriter);
        Throwable cause = ex.getCause();
        while (cause != null) {
            cause.printStackTrace(printWriter);
            cause = cause.getCause();
        }
        printWriter.close();
        String result = writer.toString();
        sb.append(result);
        try {
            long timestamp = System.currentTimeMillis();
            String time = formatter.format(new Date());
            String fileName = time + "-" + timestamp + ".txt";
            if (Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)) {
//                String path = WclyApplication.SDFile+WclyApplication.appPathLog;
                File dir = new File(path);
                File desFile;
                if (!dir.exists()) {
                    boolean mkdirRes = dir.mkdirs();
                    if (mkdirRes) {
                        desFile = new File(path + File.separator + fileName);
                        if (!desFile.exists()) {
                            desFile.createNewFile();
                        }
                    } else {
                        desFile = new File(path + File.separator + fileName);
                        if (!desFile.exists()) {
                            desFile.createNewFile();
                        }
                    }
                } else {
                    desFile = new File(path + File.separator + fileName);
                    if (!desFile.exists()) {
                        desFile.createNewFile();
                    }
                }

                FileOutputStream fos = new FileOutputStream(desFile);
                fos.write(sb.toString().getBytes());
                fos.close();
            }
            return fileName;
        } catch (Exception e) {
            Log.e(TAG, "saveCrashInfoToFile an error occured while writing file...", e);
        }
        return null;
    }

    /**
     * 日志打印
     */
    public static final String LINE_SEPARATOR = System.getProperty("line.separator");

    private static void printLine(String tag, boolean isTop) {
        if (isTop) {
            Log.d(tag, "╔═══════════════════════════════════════════════════════════════════════════════════════");
        } else {
            Log.d(tag, "╚═══════════════════════════════════════════════════════════════════════════════════════");
        }
    }

    public static void printJson(String tag, String content, String body) {
        printJson(tag, content, body, "");
    }

    public static void printJson(String tag, String content, String body, String endString) {
        String message;
        try {
            if (body.startsWith("{")) {
                JSONObject jsonObject = new JSONObject(body);
                message = jsonObject.toString(4);//最重要的方法，就一行，返回格式化的json字符串，其中的数字4是缩进字符数
            } else if (body.startsWith("[")) {
                JSONArray jsonArray = new JSONArray(body);
                message = jsonArray.toString(4);
            } else {
                message = body;
            }
        } catch (JSONException e) {
            message = body;
        }
        printLine(tag, true);
        message = content + LINE_SEPARATOR + message;
        String[] lines = message.split(LINE_SEPARATOR);
        for (String line : lines) {
            Log.d(tag, "║ " + line);
        }
        if (!TextUtils.isEmpty(endString)) {
            Log.d(tag, "║ " + endString);
        }
        printLine(tag, false);
    }

    public static void print(Object tag, String msg, GYLogInfo.PrintStyle printStyle) {
        String tagName;
        if (tag == null) {
            tagName = GYLogUtils.class.getName();
        } else {
            if (tag instanceof Class) {
                tagName = ((Class<?>) tag).getName();
            } else {
                tagName = String.valueOf(tag);
            }
        }
        if (printStyle == GYLogInfo.PrintStyle.NORMAL) {
            Log.v(tagName, msg);
        } else if (printStyle == GYLogInfo.PrintStyle.ERROR) {
            Log.e(tagName, msg);
        }
    }

    public static void printNormal(Object tag, String msg) {
        print(tag, msg, GYLogInfo.PrintStyle.NORMAL);
    }

    public static void printError(Object tag, String msg) {
        print(tag, msg, GYLogInfo.PrintStyle.ERROR);
    }

    public static void printHttpRequest(String msg) {
        printNormal("网络请求Request", msg);
    }

    public static void printHttpResponse(String msg) {
        printNormal("网络响应Response", msg);
    }
}
